Hydroponics - troubleshooting leaf spots please help

[Terminatorkader]

I have been watching ppm. As it drops ph goes up so I’ve found out how much of nutrients to add back in to get it to 1460 ppm. What Ive found is it takes 2 drops of ph down to move it one digit so if it’s 5.9 I add 10 drops to get it to 5.8. I have marks on the side tubing so I know how much water the pail is down. I add nutrients to the distilled water I’ll add, put it in, wait 15 minutes then test water ph and ppm to make sure I get it back to proper levels. I’ve found that I replace about 1/3 nutrients a day - ish. As she drinks more that goes up a little. I do a lot of checking but she has minimal purple on leave stems or main stems. Her color is now a deep green, I want to keep it that way. I have a tsw2000 over her, a tsw2000 sideways to her left hitting under foliage and a viper burple 400w angled on the other side so she has ample light. She’s drinking over a gallon a day. Her tiny buds are about .5” now. I definitely like the outcome with hydroponics and from this experience learned how important it is to test water and soil if I go that route again another time. I don’t mind checking three times a day. I think it’s best. The 7 gal black pail I bought on Amazon. I have her scrogged so now when I change reservoir water on saturdays I have 5 gallons mixed. Drain the 7 gal bucket from the bottom and refill from the top. She doesn’t dry out and I haven’t seen changes in her leaves (drooping or hooked) when I do it so that seems to be ok. I know my houseplants like her spent water Added a picture of the limb wiring that took.

 

[KingJohnC]

You do not wish to increase the PPM strength of the nutrient solution as we can not verify the presence of quantity of the present elements and nutrient bond forms in the solution and how the addition of more reactive elements interact. The addition of more nutrients to the nutrient mixture is unnecessary. Please add pH adjusting solution to another volume of water and then add the pH adjusted water to the existing nutrient mixture. There is a finite ability which cannabis plants can assimilation nutrient from a nutrient mixture concentration strength and increased salinity is negative.

With cannabis plants many strains have red or purple coloration on top of the green stem tissue and is not necessarily an indication of toxicity or deficiency.

The deep green colour can be good but not necessary during flower. Ideally we wish to provide the cannabis plants requirements and allow the plant to grow selecting which required nutrients it prefers for use. Please keep in mind mosly during the dark cycle the plants roots exude excess and or nutrients metabolites back into the nutrient solution so that many are present in solution and at a lower pH and concentration strength can once again become available for meeting the cannabis plants needs

 

[Terminatorkader]

I’ll stop that practice

When I add ph down I add it to water then put in pail. It’s never directly into the pail. I wouldn’t want it to hit roots undiluted. I don’t think the plant would appreciate that. Her rootball is massive right now.

 

[Roy Growin]

I have been watching ppm. As it drops ph goes up so I’ve found out how much of nutrients to add back in to get it to 1460 ppm. What Ive found is it takes 2 drops of ph down to move it one digit so if it’s 5.9 I add 10 drops to get it to 5.8. I have marks on the side tubing so I know how much water the pail is down. I add nutrients to the distilled water I’ll add, put it in, wait 15 minutes then test water ph and ppm to make sure I get it back to proper levels. I’ve found that I replace about 1/3 nutrients a day - ish. As she drinks more that goes up a little. I do a lot of checking but she has minimal purple on leave stems or main stems. Her color is now a deep green, I want to keep it that way. I have a tsw2000 over her, a tsw2000 sideways to her left hitting under foliage and a viper burple 400w angled on the other side so she has ample light. She’s drinking over a gallon a day. Her tiny buds are about .5” now. I definitely like the outcome with hydroponics and from this experience learned how important it is to test water and soil if I go that route again another time. I don’t mind checking three times a day. I think it’s best. The 7 gal black pail I bought on Amazon. I have her scrogged so now when I change reservoir water on saturdays I have 5 gallons mixed. Drain the 7 gal bucket from the bottom and refill from the top. She doesn’t dry out and I haven’t seen changes in her leaves (drooping or hooked) when I do it so that seems to be ok. I know my houseplants like her spent water Added a picture of the limb wiring that took.

In 'zon glasses I read your first line as 'I've been watching porn' and blew a bowl out of the bong lol
Glad you got it sorted

 

[Terminatorkader]

Just an update- she’s doing fine. Eating a ton. I check her four times a day. Take ph to 5.78 and let drift to 6.10 then bring down again. It’s possible under more skilled hands she would have been beefier but she’s still got 4 weeks more to go. It’s my first time using hydroponics. All in all not bad. I won’t grow again until next fall. Too difficult to keep my grow tent under 86 in summer but I’m rebuilding a better rdwc for them over summer

Thank you again for all your guidance! I love this site and the knowledge shared.

 

[Terminatorkader]

And now we start watching flavor crystals

 

[Terminatorkader]

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